Pharmacognosy Magazine

ORIGINAL ARTICLE
Year
: 2015  |  Volume : 11  |  Issue : 41  |  Page : 38--43

Photoprotective and toxicological activities of extracts from the Antarctic moss Sanionia uncinata


Andréia da Silva Fernandes1, Alexandre Santos Alencar1, Heitor Evangelista1, José Luiz Mazzei2, Israel Felzenszwalb1 
1 Department of Biophysics and Biometry, Institute of Biology Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, Brazil
2 Platform of Analytical Chemistry, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil

Correspondence Address:
José Luiz Mazzei
Farmanguinhos, Fundašão Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, 21041-250, Rio de Janeiro, RJ
Brazil

Background: The Antarctic moss Sanionia uncinata (Hedw.) Loeske has shown high ultraviolet (UV)-absorbers content after exposition to high levels of UV-B radiation and can be an important source of antioxidants. Objective: The aim was to investigate photoprotection and mutagenicity by the aqueous extract (AE) and hydroethanolic extract (HE) from the Antarctic moss S. uncinata. Materials and Methods: Photoprotective activities were determined through survival curves of Escherichia coli strains, after UV irradiation in an aqueous solution of thymine and in vitro sun protection factor (SPF). The Salmonella/microsome assays were applied to assess the mutagenicity. Results: Both extracts induced photoprotection against UV-C radiation. The AE showed a higher protection than the hydroethanolic one against UV-induced thymine dimerization. The SPFs were low in both extracts. In association to benzophenone-3 a significant increase in the SPF was detected for the AE, and a significant decrease was induced by the HE. No mutagenicity was found in the both extracts. Furthermore, it was observed absence of cytotoxicity. Conclusion: Water-extractable compounds seem to contribute on photoprotection of this Antarctic moss.


How to cite this article:
Fernandes Ad, Alencar AS, Evangelista H, Mazzei JL, Felzenszwalb I. Photoprotective and toxicological activities of extracts from the Antarctic moss Sanionia uncinata.Phcog Mag 2015;11:38-43


How to cite this URL:
Fernandes Ad, Alencar AS, Evangelista H, Mazzei JL, Felzenszwalb I. Photoprotective and toxicological activities of extracts from the Antarctic moss Sanionia uncinata. Phcog Mag [serial online] 2015 [cited 2022 Oct 5 ];11:38-43
Available from: http://www.phcog.com/article.asp?issn=0973-1296;year=2015;volume=11;issue=41;spage=38;epage=43;aulast=Fernandes;type=0